package map;

import java.util.HashMap;
import java.util.Map;

public class Test {
    public static void main(String[] args) {
        String line = "hello world! thinking in java! i love java!";
        Map<Character, Integer> map = new HashMap<>();

        for (int i = 0; i < line.length(); ++i) {
            char c = line.charAt(i);
            if (map.containsKey(c)) {
                map.put(c, map.get(c) + 1);
            }else{
                map.put(c, 1);
            }
        }
        System.out.println(map);
    }
}
